About The Word Quinidine

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Find the definition of the medical term Quinidine. Quinidine defined and explained for easy understanding at the Medical Dictionary from ClusterMed.info.

Quinidine

Quinidine Definition & Meaning
Quinidine Definition And Meaning

What's The Definition Of Medical Term Quinidine?

An optical isomer of quinine, extracted from the bark of the Cinchona tree and similar plant species. This alkaloid dampens the excitability of cardiac and skeletal muscles by blocking sodium and potassium currents across cellular membranes. It prolongs cellular action potential, and decreases automaticity. Quinidine also blocks muscarinic and alpha-adrenergic neurotransmission.

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